Lubricator.



.- ELLY. RIGATOR. APPLICATION FILED MAY 5, 1909. 935,260. Patented Sept.28, 1909.

UN 11 n JOHN KELLY, OF CHICAGO, ILLINOIS.

LUBBICATOB.

Specification of Letters Patent.

Patented Sept. 28, 1909.

Application filed May 5, 1909. Serial Ito. 494,070.

To all whom it may concern:

Be it known that I, J 01m KELLY, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Lubricators, of which thefollowing is a specification.

My invention relates to an improvement in the class ofautomatically-controlled lubricators or grease-cups for use inconnection with shaft or journal bearings.

In the accompanying drawing, Figure 1 is a broken view in elevation,mainly sectiona on line 1, Fig. 2, showing my improvement applied to ashaft-bearing and Fig. 2 is a broken section on line 2, Fig. l. i

A shaft is represented at Z-l, journaled in bearings, one of which isshown at Into the bearing is screwed a covered cup 5 for holding thelubricant and equipped with a spring-pressed valve 6 for controlling thedischarge through the neck '7 of the cup which communicates with a duct8 in the bearing. The construction of the bearing and valved cup may bethat illustrated or any other that is desired. To the stem 9 of thevalve, which works through the cup cover, is connected one end of alever10, which is fulcrumed between its ends, at 11, on an arm 12 extendingfrom the cup.

The feature of my invention is a strap 13, preferably of leather, thoughother flexible material may be used, depending from the free end of thelever to hang across and in contact with the shaft, the lower end ofthis strap carrying, by preference, a weight 14 tending to increase thefrictional contact of the strap with the surface of the shaft.

The purpose of the automatic action of a lubricator in the class towhich my inventionrelates is to cause the motion of the shaft or journalequipped with it to feed the lubricant to the bearing and to arrest thefeeding by the stoppage of such motion. This purpose is accomplished bymy im provement in the following manner: Rotation of the shaft by thefrictional contact between its surface and that of the belt, exerts onthe latter a drag or pull sufficient to depress the outer end of thelever 10 and thereby raise the valve 6 to open the feed. lVhen the shaftis not in motion the valve closes under the action of the controllingspring, or by its own gravity, thereby shutting off the discharge oflubricant from the cup until the shaft is again set in motion. Thedevice operates whichever direction the motion of the shaft may e, thestrap being adapted to be extended across either side of the shaft, andshould the motion of the shaft be reversed, its frictional contact withthe strap will carry the free end of the latter over to cause it to hangon the opposite side of the shaft to be actuated by its motion in themanner described.

lVhile a weight is shown and described as being attached to the end ofthe strap to operate as means for maintaining the tie sired frictionalengagement of the strap with the shaft, it is to be understood that themeans may be other than the weight 14; for example, by employing a strapof greater length, the weight as a separate element may be dispensedwith, and the strap of its own weight operate as such means.

lVhat I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a shaft, a bearing therefor and a valvedlubricant-cup connected with said bearing, a lever connected with thevalve, a strap of flexible material depending from said lever, and meansfor maintaining the strap in frictional contact with the shaft, for thepurpose set forth.

2. In combination with a shaft, a bearing therefor and a valvedlubricant-cup connected with said bearing, a lever connected with thevalve, and a strap of flexible material depending from said lever infrictional contact with the shaft, and a weight on the free end of thestrap, for the purpose set forth.

3. In combination with a shaft, a bearing therefor and a valvedlubricant-cup con nected with said bearing, a lever fulcrumed betweenits ends on said cup with one end engaging the valve-stem, a leatherstrap secured on the opposite end of the lever to de pend therefrom, andmeans for maintaining the strap in frictional contact toward its freeend with the shaft, for the purpose set forth.

4:. In combination with a shaft, a bearing therefor and a lubricant-cupconnected with the bearing and provided with a cap, a valve pendtherefrom, and means for maintaining 1n sand cup havlng a stem extendlngthrough the strap 1n frletlonal Contact wlth szud snldcup, a sprlngsurrounding szud stern heshaft, for the purpose set forth.

tween the cap andvale, a lever fulcrum ed JOHN KELLY. between lts endson sand cap \vlth one end In presence 0fc engaglng the valve-stem, aflexlhle strap se- JOHN \VlLSON,

cured t0 the opposite end of the lever to de- RALPH A. SCHAEFER.

